Polyphosphates in Hard Water Treatment

Essential Mineral

Polyphosphates are used in mineral sequestration by municipal and local authority water systems around the world to control hard water issues such as iron and calcium in drinking water. Polyphosphates are an essential mineral in the human body and play a key role in blood coagulation. Produced and released by platelets they activate Factor XII which is essential for blood clot formation. On an industrial scale, polyphosphates are derived by mining minerals or through plant extraction.

They are available in either liquid or solid form to fit different application needs. The solid form we use resembles clear beads or granules. These granules can be used in water treatment products such as filters and descalers.

Silkwater Technologies use poly-phosphate crystals to treat and sequester calcium, aragonite and hard water minerals in our filter descaler products. Poly Phosphate used in water conditioning can eliminate the use of an ion exchange water softener in many cases, and is usually more economical and environmentally friendly, not needing to regenerate, producing no wasted water or brine and saving on salt purchases.

How It Works in Water treatment.

As untreated water passes through the water filter descaler, a small amount of poly-phosphate dissolves very slowly in the water stream and changes how the calcium and iron react in the water. Phosphates in general are used in water treatment systems to inhibit corrosion of the water mains and plumbing (iron, steel, galvanized, lead, copper), sequester nuisance metals in the water supply (iron, manganese, calcium, magnesium).

Benefits of using Poly-phosphates in Water:

Prevent “red” staining (from iron) and “black” staining (from manganese) water
Reduce soluble lead and copper in potable water
Clean and dissolve precipitated mineral scale already existent in water distribution lines
Prevent and/or retard scale formation (from mineral depositing) and corrosion (from low pH and/or dissimilar metals) in the water distribution system

Customer Reviews

My old water softener died on me and I wanted something without the salt.. It was becoming impossible for me to replace it because of the infirmaries of old age. I love this. It does not take up the space of the other one and the water tastes better. I live in AZ where the water is hard and very often bad tasting so I tried this out on my fussy friends and they all approved of the taste.Even with the water softener, I had spots on the tile but I have none yet eith this . I have very little build-up on anything and that was my main priority.

Margie Brown

We live in an area with very hard water. We put this in our brand new house and after 3 months we are not seeing any of the lime buildup or staining on sinks, faucets, etc that we fought on a daily basis in our old house. Highly recommend.

D. Hovorka

This product is awesome, does a great job softening the water and no need to add or buy bags of salt.

Rachel Eastburn

I have to give this 5 stars right now. Its only been 3 months, but I have no spotting on my glass or chrome, and no buildup on faucets. If I notice some later, I will come back and edit this review. Up till now, I am very satisfied. It was hard to believe that something this small and simple could take care of my water the way it does. No more buying and carrying the bulky salt bags, and no more looking at the large , ugly water softener. This unit is barley noticeable.

Michael Goodrich

This thing is awesome, does a great job softening the water, and replacing the crystals every 3 months is a cinch.

Michael B.

Recently installed this system in our home and truly think it is remarkable. Living in a rural area with a well we were having issues with calcium deposits. Had to replace our water heater after 6 years and the water softner was not working. Hated lugging 40lbs of salt under the house. Found out about this new technology and communicated with the seller who answered all our questions. It was very easy to install and within days we noticed a difference in our clothes and skin. The white residue on our fixture is no longer there. Even our dishes sparkle again. The price is right and I would recommend this great product to anyone.

Mark Burgess

No bags of salt to heft around and store, no back flushing, no tanks to maintain. We purchased a Filterwater-3166402237 Poly Salt Free Water Softener filtration kit in January of 2017. It was another year before it was installed as part of our house renovation. Since moving back into into the house this January, and watching for signs of calcium/lime deposits as previously experienced, we noticed nothing but the occasional formation of a white powder on countertops and around fixtures where water had evaporated.

Now, rather than having to remove greenish deposits with vinegar and bash bristled brushes, they just wipe away with a damp sponge during normal cleaning. In addition to the house we live in we also own a couple of rental properties. As a part of the upgrades we normally do when tenants leave we will definitely being installing these same water conditioners to reduce maintenance chores and plumbing deterioration. Sincerely, Tom Curl - Medfield, MA

Tom Curl

Amazing. Solved our hard water problems. Bought Jan 2017, now Nov 2017 and noticed dishes coming out chalky. Time for new crystals. Lasted much longer than the 6-8 months and we are a house of 7. Customer service is amazing as I had a leak initally and Brad Morris called and emailed until I got it fixed. I needed to add some Teflon tape on the pressure release valve (it is a separate piece).

Lori L